5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Got my 3.73's in...

Old 02-21-2007, 11:40 AM
  #21  
ToplessGT
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Default RE: Got my 3.73's in...

give it a little break in time. I was told i didnt have to, but at least get some heat through them and make sure everything works right before going out and mashing it. Some people say 500 miles, I think thats ridiculous, but whatever. As long as they are put on right and shimmed correctly, you wont have problem, (well i didnt anyway). yeah, gears rule!
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Old 02-22-2007, 12:56 AM
  #22  
easter9053
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Default RE: Got my 3.73's in...

ORIGINAL: 95walter

a speedo gears will fix you speedo problem and you should have to run different gas unless you mess with your timing. and as far a break in when i got mine put in the guy said they are either rightor wrong and he races mustangsand hehas done hisfair shareof rearend work
What's a speedo gear and are you saying that you do have to use 93 octane fuel or 87? I haven't messed with my timing yet? Are you saying that if I bump my timing up that I should or shouldn't have to use higher octane fuel. Please clear me up with these question. Thanks in advance.
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Old 02-22-2007, 01:08 AM
  #23  
LTnone
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Default RE: Got my 3.73's in...

The "break in" period isn't to wear the gears together or anything like that, it's merely to take it easy for a while to make sure stuff was done right, so in case it wasn't you're not raggin on it and screwing it up more.


Gears don't affect gas, use 87. A speedo gear recalibrates your speedometer for the different gears (makes it accurate). When you bump timing you want to increase octane
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Old 02-22-2007, 01:37 AM
  #24  
Dubs
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Default RE: Got my 3.73's in...

How do you like your 3.73's?

ORIGINAL: LTnone

The "break in" period isn't to wear the gears together or anything like that, it's merely to take it easy for a while to make sure stuff was done right, so in case it wasn't you're not raggin on it and screwing it up more.


Gears don't affect gas, use 87. A speedo gear recalibrates your speedometer for the different gears (makes it accurate). When you bump timing you want to increase octane
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